Wristwatch



FIG. 1 is a front perspective view of a wristwatch showing my new deisgn;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a front side view thereof; and,

FIG. 7 is a rear side view thereof. 

THe ornamental design for a wristwatch, as shown and described. 